sbase/util/afgets.c

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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#include "../text.h"
#include "../util.h"
char *
afgets(char **p, size_t *size, FILE *fp)
{
char buf[BUFSIZ];
size_t n, len = 0;
while(fgets(buf, sizeof buf, fp)) {
len += (n = strlen(buf));
if(len+1 > *size && !(*p = realloc(*p, len+1)))
eprintf("realloc:");
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strcpy(&(*p)[len-n], buf);
if(buf[n-1] == '\n' || feof(fp))
break;
}
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return (len > 0) ? *p : NULL;
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}